upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 343

• Manufacturer Part Number: upd78f0114m6gb-8es
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(2) HALT mode release
The HALT mode can be released by the following two sources.
(a) Release by unmasked interrupt request
When an unmasked interrupt request is generated, the HALT mode is released. If interrupt acknowledgment
is enabled, vectored interrupt servicing is carried out. If interrupt acknowledgment is disabled, the next
address instruction is executed.
Remarks 1. The broken lines indicate the case when the interrupt request which has released the standby
or subsystem clock
Ring-OSC clock,
X1 input clock,
Status of CPU
release signal
2. The wait time is as follows:
Standby
mode is acknowledged.
• When vectored interrupt servicing is carried out: 8 or 9 clocks
• When vectored interrupt servicing is not carried out: 2 or 3 clocks
Figure 17-3. HALT Mode Release by Interrupt Request Generation
Operating mode
instruction
CHAPTER 17 STANDBY FUNCTION
HALT
User’s Manual U16227EJ3V0UD
HALT mode
Interrupt
request
Oscillation
Wait
Wait
Operating mode
343